There are many supporters of the tunnel, including Historic England, the National Trust and English Heritage.
Seizures by the police linked to the tunnel include over 8 tonnes of marijuana and 327 lbs of cocaine, according to court records.
They said they supported international competition, but considering the three fires that have occurred in the tunnel, including a particularly damaging one in 2008, "no deterioration in the level of security can be considered".
In this article, the effects of rock bolting on the stress distribution around the tunnel, including the position and orientation of bolts, the overburden depths, and the bolt lengths, are simulated using the ANSYS software with an elastoplastic model.
As shown in Fig. 4, the external loads acting on the tunnel include two parts: one is the load q y) coming from the equivalent released load, which can be expressed as q y) = D cdot sigma_{{z}} (x_{0},y,z_{0} ), (17 where D is the tunnel diameter.
In 1997, the water level in some of the lakes above the tunnel, including Lutvann and Nordre Puttjern, sank dramatically.
The tunnel, including Nationaltheatret, cost NOK 625 million Norwegian krone (NOK), of which Oslo Municipality had paid NOK 170 million.
During the construction in 1997, the water level in some of the lakes above the tunnel, including Lutvann and Nordre Puttjern, fell dramatically.
The Jurassic sediments encountered in the tunnel included breccia and conglomerate in contact with the underlying gneisses and a sandstone with coal fragments, some of which was quite unconsolidated.
There are several active and former ski resorts in the vicinity of the tunnel, including Breckenridge Ski Resort, Keystone Resort, Arapahoe Basin, Loveland Ski Area, Berthoud Pass Ski Area and Winter Park Resort.
